Any movie that makes cruel fun of Canada, Bill Gates and the Baldwin brothers can’t be all bad. The quite clever satirical moments in this crudely animated filth fest, though, are not remotely worth being dragged through the cinematic sewer.

Think it’s like the TV show? Just you wait. That’s like comparing a third-grader passing gas to the same kid voiding his bowels and smearing the stuff all over creation.

The movie opens in the “quiet little redneck podunk white-trash mountain town” of South Park with the gang – Kyle, Cartman, Stan and mush-mouthed Kenny – going to see “Asses of Fire,” an R-rated Canadian import.

They emerge aping the extremely foul mouths of the film’s stars, Terrence and Philip.

The town goes berserk, with Kyle’s overbearing Jewish mom founding a hysterical organization called Mothers Against Canada. Terrence and Philip are arrested on Conan O’Brien’s show and held as war criminals, charged with corrupting America’s youth.

With Canada and the United States at war, it’s up to the “South Park” kids to rescue Terrence and Philip before they’re executed, and teach the adults about tolerance.

Meanwhile, Kenny dies (for real) and goes to hell, where he witnesses gay lovers Saddam Hussein and Satan cat-fighting while preparing to take over the world.

“South Park” creators Trey Parker and Matt Stone may be vile, but they’re awfully smart. They lace parodic musical numbers throughout the film, including a hilarious fantasy sequence called “What Would Brian Boitano Do?”

And their assault on pop-culture pieties can be as acidly funny as it is indiscriminate and offensive.

But they go sickeningly over the line, and the film leaves you feeling slimed and sorry for having bothered.

Did we really need to hear the raunchy pillow talk as Saddam and Satan have rough anal sex? Who laughs at a kid, even one as repugnant as Cartman, witnessing his mother being defecated on in an Internet porn video?

And what’s the point of having a French kid calling God “the biggest bitch of them all”?